Rivet making maohinii



(No Model.) 3 Sheet sS11eet 1.

W; R. FOX. RIVBT MAKING MACHINE. No. 549,190. l tened Nov. 5, 1895.

AN DREW EGRMMM. PHGTGLITHOWASIHINGTONDS.

3 Sheets-Sheet 2.

(No Model.)

' W R. FOX.

RIVET MAKING MACHINE.

No. 549,190. Patented Nov. 5,1895.

' 3 sheets-sheet. 3.

X 0 P R W (No'MOdeL) 1 RIVET MAKING MAGHINE.

No. 549,190. Patented-Nov. 5,1895.

Rapids, in the county of'Kent and State of the upper standard. It is-caused to recipro- 5 by the nut "13, the center of the shaft being} the bottom, and the-hopper moves up and WILLIAM R. Fox, on GRAND API S,

PATENT QFFICE.

MIGHIGANJASSIGNOR TO THE FOX MACHINE COMPANY, OF SAME PLACE.

G MACHINE.

SPECIFICATION forming part of Letters Patent No. 549,190,.dated November 5, 1895.

Application filed May 28, 1895. Serial No.550,927. (No model.)

To all whom it may concern:

Be it known that I, W1LLIAM..R.F X, a citizen of the United States, residing at Grand Michigan, have invented'certain new and useful Improvements in Rivet-Makin g Machines, of which the following-is a specification, reference being had therein :to the accompanying drawings. A

My invention is an improved automatic rivet-former, and is designed to-formthe ends ofrivets upon blanks prepared and'fed by the'maohine to the forming-dies.- My said inventionis illustrated in the accompanying drawings, in which Figure 1 represents the machine in fron elevation. Fig.2 is a-similar view in: side elevation.- 3-shows a section of the upper part of the machine." lis a side e'levation, partly in sectiomon an enlarged scale, showing the dies andm'echanism for feeding the blanks thereto and removing them therefrom. Figs. 5, 6, 7,8, and 9 show details 'of construction of parts of the machine, all on a scale larger than Figs. 1 2-,and-3. Figs. 10, 11, and 12 illustrate the form of the finished rivet. Fig. 13 is a sectional view throughthe shuttle and dies. Fig. 14 is aplanview of one of the dies. I In the drawings the main supporting piece 1 or-standard (shown at A)-is'made'as.usual in this class of machines,beingcast in one piece; A supplemental standardAds bolted --to it and carries the hopper and its operating mechanism. The hopper a is supported upon avertical slide 0, which moves inguideszon 1 cate vertically by means of a shaft d, carrying-aneccentric e, engaging with-the slide. i For this purpose the slide has-a laterally-extending slot 10, in which a block 11 may slide, and this block is held on the eccentric-pin 12 indicated in Fig. 1 at 14. A discharge-pipef enters the bottom of the hopper and projects withits open end within the hopper-andabove down onv this pipe. .Pins 22 also project" through the bottom, beingfixed on abracketf g on the standard,and these pins as the:-hopper falls lift and disturb the blanks andf cause them to enter themouth of the pipe. These blanks fall down in the tube, which, as itturnsatthe bottom, as shown in Figs. 1 and G, for example, brings them: into a horizontal position, where they-are moved forward by the weight of those behindfin the vertical part of thetube; -Figs. '5 and 6 illustrate how theseblanks, moving endwise, pass into the upperopen end of the inclined chute h, when they are ipermitted :by thespring-gate. 2', the end of which is shutdown automatically by means 0f. a spring 3 and when down closes the open lower end of the pipe; This gate is opened by means-ofxaxrod7o, connecting the gate with the reciprocatinghopper. The gate, when raised, permits one blank to move forward,- soeasto. fall into thech-uteh; From this the blank passes into a notch -5 of areciprocating shuttlecor carrier Z,- this notch forming a bed forthe-blanks and being in-line with the end of .the=chute when at its'rear limit From this position the-shuttle moves to carry the blank intolinewith the .dies M and N, of which the upper or movable die M is then raised. The forming-cavities of these dies correspond in shape to the'finished rivets shown in. Figs.- 10, 11, and 12. The shuttle remains in place. until the die M has-descended on the fixed die N andpressed the blank into the shape shown iirthe figures last named. The shuttle is supported on one end by a pivoted standard Itmoves. in

the lower die and has: sliding connection with a standard 6 at the other end.- .It-is reciprocated by'means of .camplate-D,rengaging with a pin' .on the shuttle; The pivoted standard has a slotteddower connection and is held-up normally by a spring 7, and the shuttle in reciprocating moves-and carries the 0 blank on a level a little above-that of the lower-die face; but the upper ,die forces this down on the blankuntil the. blank is forced onto the f0r1ning-ends.--. As the die rises the shuttle is lifted by the spring and disengages 9 5 the rivet from the lower die. Following this is :the action of asmall plunger 8, centrally arranged and freely moving in the upper die to advance and push'off the rivet from the upper die. Thisis effected at ornear the The little plunger is attached to this arm and moves with it. As the upper die recedes from the lower a rivet-receiver R, pivotally supported on bracket S, is swung by means of the spring a so that the inner end of the receiver (shown in Fig. 1) will be swung beneath the upper die. As the die advances again a plate 71?, having an inclined edge and fixed to the die-slide, pushes theinner arm or part of the receiver aside and discharges the rivet. As the rivet is dropped from the die on the last part of the upward movement of the die and the receiver is returned beneath the die by a spring it follows the movement of the die and is removed again before the die again acts on another blank. The plate n is attached to and moves with the upper'die holder. The upper die is attached to a slide worked by an eccentric on a shaft S. The shaft which operates the hopper-slide moves a little faster than that which operates the shuttle, and thus the clutch is kept always full, so that in case a rivet stick in the tube and a few revolutions occur without feeding the hopper will soon compensate for the loss and fill the tube. The blank-tube is contracted at the end, so that only one blank can pass at a time to the shuttle. If the gate should be lifted when the chute 7L is full, no damage would be done, as the gate is pulled over the opening by a spring and forces the rivet down only when the blank has passed out of the way.

The notch forming the rivet-bed in the shuttle is round and that part of the rivetblank lying therein retains its shape. The ends of said blank projecting over and upon the angular notches 10 in the dies (shown in Fig. at) are squared and the rivet formed in the shape illustrated in the drawings.

As the rivet-chute h is set with its lower end close to the shuttle, provision is made for its upward movement when the shuttle rises to disengage the rivet from the lower die. For this purpose the chute is hung in a link J, and the feed-tube f has a telescoping joint at 15, Fig. l, to allow the lower part of the tube to move in relation to the upper part. The operation is as follows: The cylindrical blanks are fed into the tube f by the vertical reciprocation of the hopper, aided by the stationary pins 22, and from this tube the blanks are forced one by one, due to the weight of the blanks in the tube, into the inclined chute h, the passage of the blanks being regulated by the spring-gate 7 operating in unison with the hopper. From the chute h the blanks fall into the pocket or opening in the shuttle, and this then moves longitudinally and carries the blank between the dies, the upper one of which then comes down and presses the ends of the blank projecting 011 each side of the shuttle into the lower die, the shuttle yielding for this purpose. The ends of the rivet are thus formed and the upper die recedes. At the same time the shuttle, rising, frees the blank from the lower die, which thus remains fixed to the upper die until in the final upward movement the plunger 8 discharges the rivet from the upper die. Just prior to this, however, the receiver It has been swung beneath the die by its spring a, the plate 01 receding with the upper die and allowing said spring 11 to act, and the rivet falls into this receiver, and as the die comes down for another action the plate 12?, moving therewith, engages the receiver and moves the same aside to discharge the rivet.

I claim- 1. In combination in a rivet forming machine, a pair of dies to form the ends of the rivet, a shuttle to engage the body of the blank leaving its ends free, and means to move the shuttle between the dies to hold the blank while the dies act thereon and to retract the same after the dies have operated, substantially as described.

2. In combination in a rivet forming machine, a pair of dies to form the ends of the blank by engaging with the sides of said ends, and a shuttle to move the blanks be tween the dies, said shuttle engaging the body of the blank and leaving its ends projecting, substantially as described.

In combination in a rivet forming machine, a pair of dies to form the ends of the rivet, a shuttle, means for moving said shuttle longitudinally and vertically between. the dies and means for feeding blanks to the shuttle, substantially as described.

at. In combination. a pair of dies one of which is movable, a shuttle reciprocating across one of the dies, having a recess for the blank, said shuttle having spring support, said dies having forming surfaces outside of the shuttle and means for feeding-the blanks to the shuttle, substantially as described.

5. I11 combination with the hopper the pipe turned to horizontal position, the chute and the spring gate pivotally supported and means for raising the gate, substantially as described.

6. In combination, the horizontally turned feed tube, the chute, the shuttle having a recess for the blank, arranged to register with the said chute, and a spring gate arranged over the chute at the mouth of the tube and means for raising the gate, substantially as described.

7. In combination, the shuttle, having a recess for the blank, the rivet chute, arranged to deliver the blanks to the shuttle, the horizontally turned tube arranged to deliver blanks to the rivet chute, means for reciprocating the shuttle whereby it will feed the blanks one by one to the dies and will cut off the blanks in the chute, all substantially as described.

8. In combination the dies, the shuttle moving across and in one of the dies, and pressed normally upward, a rivet holder arranged so that it may be forced upward, and deliver the blanks to the shuttle, and movable tube arranged to deliver the blanks to the holder, all substantially as described.

9 In combination, the hopper, operated by a shaft, and having a tube for conveying the blanks, the gate at the lower end thereof, a chute arranged to receive the blanks from the tube, dies, and means for conveying the blanks to the dies and a shaft arranged to operate the die, said die shaft operating more slowly than the chute shaft, substantially as described.

10. In combination with the dies and the shuttle, the spring receiver for removing the rivets held normally below the die by the spring and means for removing the receiver from beneath the die as the die descends, substantially as described.

11. In combination, the hopper, the agitating fingers reciprocating vertically through the bottom of the hopper and the feeding tube extending up through the bottom of the hopper and projecting vertically therein alongside of the agitating fingers, substantially as described.

' 12. In combination, the two dies each havdies, means for freeing the rivet from the upper die as the same recedes, and a receiver with means for operating the same to and from position beneath the upper dies, substantially as described.

15. In combination, the hopper, the'feed tube with its lower end turned horizontally, a chute to receive the blanks therefrom, the dies and a gate operating vertically across the lateral opening of the lower end of the chute, substantially as described.

In testimony whereof I affix my signature in presence of two witnesses.

WILLIAM R. FOX. Witnesses JNO. DUFFY,

EARL S'roKoE. 

